We just concluded our trip last week. Thank you all for the advice - it was all very welcome and well-taken! Some observations from a first-timer:
The parks were perfect - exactly what we had hoped for with this trip. And gosh, we could not get over how nice seemingly everyone was. For example, on the Circus Train, I saw a family with older children split up so that a younger child and her family could sit in one of the animal cage cars that the child had their heart set on. Countless times, I saw adults move out of a carefully-staked spot so that a child could see a parade/show - even at the brand new Skywalker Saga show that I expected to be obnoxiously cut-throat about perfect positioning because of where the viewing area is relative to the Millennium Falcon. It made us really happy to see that Disney adults can check themselves at DLR because it definitely does not always feel like that at WDW.
What a differece between the Monorail at DLR and the Monorail at WDW! Two completely different purposes result in two completely different experiences. The Monorail seems more like mass transit at WDW while it seems more like an attraction at DLR.
We loved the California version of Soarin'. It really makes you appreciate the diversity and beauty of the state and our country!
We noticed and liked how much less emphasis was placed on alcohol sales at DCA. Not that we have any problem with adults enjoying one or several drinks, it just seems really in your face at WDW outside of MK.
We remarked at how well-themed the Matterhorn felt for a near-original ride in the middle of a park in southern California that is based upon the snowy Swiss Alps.
Toon Town was really well done. I could see kids losing themselves here for hours with all of the little gags. I also loved how the location of MMRR and the Mickey meet-and-greet there actually make sense themactically.
This may be a case of overly hyped expectations, but the castle did not seem tiny to us. EVERYONE - all of the social media influencers, etc. - joke and warn about how insignificant Sleeping Beauty's castle at DLR is if you are accustomed to Cinderella's at MK. It's smaller, of course, but like, it's still a significant structure in the middle of the park that's still much bigger than my house. I was expecting to be shocked by it's size and just wasn't. TIA for being mature about the many jokes that can be made in response to this comment lol.
In retrospect, we were kind of glad IASW was under refurbishment. We know we missed out on an iconic ride, but we ran out of time even without it! We ended up being inside
Disneyland for about 20 hours in total and, in that time, only ate two approx. 30-minute sit-down meals (i.e., about 19 hours walking, in queues, on rides, or watching shows). With that, we still were not able to go on Autopia, BTMRR, or Peter Pan.
Our mistake on timing was with SWGE. Not that there's anything wrong with it, but if you've been to WDW as many times as we have, SWGE is not a value-add at DLR. It is somewhat far from everything and, like at DHS, getting through it always takes up a considerable amount of time. Advice that I would have for a WDW veteran visiting DLR for the first time is to avoid SWGE unless it's a must-do every time for you and instead spend that time in Radiator Springs or Avengers Campus (which, to be clear, are both in the other park). I know others gave us that advice and, since we disregarded it, I'm now reiterating it.
Finally, a controversial hot take: the Grand Californian was not it for us. I don't mean to sound like I'm complaining about it. It's beautiful, comfortable, and well-appointed for sure. But, the atmosphere was not what we look for in a Disney resort. Many people complain about the Grand Floridian feeling stuffy and this, to us, felt 10x more stuffy than any time we have every stayed at the Grand Floridian. In our opinion, the darkness of the theming, plus the lack of open outdoor space, plus the naturally and artifically-created privacy from the parks and DTD, plus the fact that you have to go through security to really exit the resort just felt overly restrictive I guess. I don't know how else to explain it - almost like how it must have felt to live in a medieval castle. Still, top notch staff at the Grand Californian - could not say a single bad thing about anyone we encountered there.